Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    04-01-2025 17:05

General

  • Target

    JaffaCakes118_7ad1196c9f3cf56ec661ff6d6d69c5e0.exe

  • Size

    659KB

  • MD5

    7ad1196c9f3cf56ec661ff6d6d69c5e0

  • SHA1

    05684ab4d6b463f04be533f2406ca0f809db9d0f

  • SHA256

    04f04a07d900cda96cdebd631a95f177bb0f51caa5d780e931390a3dfdade68c

  • SHA512

    e56c09cec9fd6bec546edc3005e2e0a464cda0acea07408aa3142d1a9badbce9703bb91540bad23ea81b8b0ee9bf339528bcdec27585c3d7ad9453e4ed7cc747

  • SSDEEP

    12288:O9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/he:aZ1xuVVjfFoynPaVBUR8f+kN10EBU

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

46.105.250.97:1604

Mutex

DC_MUTEX-3TMAVLG

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    l152Z1g7L1AT

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

    DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

  • Darkcomet family
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Modifies firewall policy service 3 TTPs 3 IoCs
  • Modifies security service 2 TTPs 1 IoCs
  • Windows security bypass 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 1 IoCs
  • Disables Task Manager via registry modification
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Windows security modification 2 TTPs 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 46 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 61 IoCs
  • System policy modification 1 TTPs 3 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ad1196c9f3cf56ec661ff6d6d69c5e0.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ad1196c9f3cf56ec661ff6d6d69c5e0.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Loads dropped DLL
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1268
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ad1196c9f3cf56ec661ff6d6d69c5e0.exe" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2796
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7ad1196c9f3cf56ec661ff6d6d69c5e0.exe" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2692
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2828
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2092
    • C:\Windows\SysWOW64\notepad.exe
      notepad
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      PID:2792
    • C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe
      "C:\Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies firewall policy service
      • Modifies security service
      • Windows security bypass
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:2728
      • C:\Windows\SysWOW64\notepad.exe
        notepad
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2124

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Local\Temp\MSDCSC\msdcsc.exe

    Filesize

    659KB

    MD5

    7ad1196c9f3cf56ec661ff6d6d69c5e0

    SHA1

    05684ab4d6b463f04be533f2406ca0f809db9d0f

    SHA256

    04f04a07d900cda96cdebd631a95f177bb0f51caa5d780e931390a3dfdade68c

    SHA512

    e56c09cec9fd6bec546edc3005e2e0a464cda0acea07408aa3142d1a9badbce9703bb91540bad23ea81b8b0ee9bf339528bcdec27585c3d7ad9453e4ed7cc747

  • memory/1268-0-0x0000000000650000-0x0000000000651000-memory.dmp

    Filesize

    4KB

  • memory/1268-66-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2124-65-0x00000000001A0000-0x00000000001A1000-memory.dmp

    Filesize

    4KB

  • memory/2728-68-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2728-69-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2728-70-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2728-74-0x0000000000400000-0x00000000004B2000-memory.dmp

    Filesize

    712KB

  • memory/2792-17-0x0000000000150000-0x0000000000151000-memory.dmp

    Filesize

    4KB

  • memory/2792-3-0x0000000000080000-0x0000000000081000-memory.dmp

    Filesize

    4KB